# 100910 - Physics 121 Physics 121 1 Physics 121 3 Physics...

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Physics 121 9/10/10 Prof. E. F. Redish 1 9/10/10 1 Physics 121 9/10/10 3 Physics 121 9/10/10 4 o Choose origin o Choose axes o Choose scale o Set scales on graph o Take data from video Physics 121

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Physics 121 9/10/10 Prof. E. F. Redish 2 9/10/10 8 ± r t (29 = x ( t ) ˆ i + y ( t ) ˆ j x ( t ) ± ± r = ± r t 2 (29 ² ± r t 1 ± t = t 2 ² t 1 Physics 121 9/10/10 9 ±±± ±± ± ±±±± ±± rt rr tr t t rrr () () () () () () () 123 12 2 1 23 3 2 13 12 23 2132 31 = ² = ² =+ = ² + ² = ² ³ ³ ³³³ Physics 121 9/10/10 10 Physics 121 < = ± ± ± v v r t displacement time it took to make the displacement ± ±
Physics 121 9/10/10 Prof. E. F. Redish 3 9/10/10 11 Physics 121 < = = = ± = =+ ± ± ± ±± v r t v rv t rt v t rrv t final initial ² ² ²² ² ² 0 0 21 0 0 () () Position as a function of time 0 2 4 6 8 10 -5 0 5 10 15 t (sec) x (m) 9/10/10 16 Physics 121 9/10/10 17 Physics 121

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Physics 121 9/10/10 Prof. E. F. Redish
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100910 - Physics 121 Physics 121 1 Physics 121 3 Physics...

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